Astronomy and Astrophysics – Astrophysics – Cosmology and Extragalactic Astrophysics
Scientific paper
2010-09-12
Astronomy and Astrophysics
Astrophysics
Cosmology and Extragalactic Astrophysics
6 pages, 6 figures, Accepted for publication in MNRAS
Scientific paper
Filaments are one of the most prominent features visible in the galaxy distribution. Considering the Luminous Red Galaxies (LRGs) in the Sloan Digital Sky Survey Data Release Seven (SDSS DR7), we have analyzed the filamentarity in 11 nearly two dimensional (2D) sections through a volume limited subsample of this data. The galaxy distribution, we find, has excess filamentarity in comparison to a random distribution of points. We use a statistical technique "Shuffle" to determine $L_{\rm MAX}$, the largest length-scale at which we have statistically significant filaments. We find that $L_{\rm MAX}$ varies in the range $100-130 \, h^{-1} {\rm Mpc}$ across the 11 slices, with a mean value $L_{\rm MAX}=110 \pm 12 \, h^{-1}{\rm Mpc}$. Longer filaments, though possibly present in our data, are not statistically significant and are the outcome of chance alignments.
Bharadwaj Somnath
Kulkarni Gauri
Pandey Biswajit
Souradeep Tarun
No associations
LandOfFree
The size of the longest filament in the Luminous Red Galaxy distribution does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with The size of the longest filament in the Luminous Red Galaxy distribution, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and The size of the longest filament in the Luminous Red Galaxy distribution will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-326496